Well-tube and strainer.



No. 882,359. PATENTED MAR. 17, 1908.

- M. B. VAN NBSS.

WELL TUBE AND STRAINER. APPLICATION FILED r113. 1, 1906.

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MARVIN B. VAN NESS, OF WELSH. LOUISIANA.

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Specification of Letters Patent.

Patented March 17 1908.

- Application filed February 7, 1906. Serial No. 299,997.

T all whom it may concern:

Be it known that I, SIARVINB. VAN NEss, a citizen of the United States,residing at Vv'elsh, in. the parish of Calcasieu and State of Louisiana,have invented new and useful Improvements in ell-Tubes and Strainers, ofwhich the following is a specification.

This invention relates to well tubes and strainers, the object at theinvention being to provide a tube for the purpose described, which isparticularly adaptedjto sandy soil and which may be used as a permanentlining and strainer for the well after the same has nlonths of time.

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beer. bored. The tube is also intended for use in old wells.

The deep well and strainer system for irrigation is a very seriousproposition in the lower section of the United States and in othercountries, and particularly in rice growing districts where, in order tosuccessfully calise crops, the land must be covered with water and keptin a thoroughly moistened condition for periods of from four to sixThese wells are from two tit five hundred feet in depth and frequentlycontain from fifty to one hundred feet of strainer, not less than 8 to12 inches in diameter.

' By reason of the construction hereinafter described, the pipe sectionsof this invention may be made of any suitable length and connected orcoupled together by joints of any kind, such as screw joints and.inserte in the well either after the same has been drilled or during thedr'lling operation, the well tube of this invention being speciallyadapted to wells formed by the standard churn drilling rigs or by thesystem of rotary drilling and rotation of the pipe or tube. It will beunderstood thatunder such a system as the one referred to, the wirecovering, as

ordinarily employed, would be destroyed before the wcllwas completed orfairly under way, The well tube hereinafter described is adapted towithstand either longitudinal or rotary or torsional strain withoutliability of injury and may be attached to ,the line of plpfi) or tubingas the latter is inserted in the we A further object of the invention isto produce a simple, cheap and practical well tube which ineets therequirements of the i-sent day, cclmbining superior strength and greaterut lity as conipared with similar devices now The strainer openings areformed in such 1: anner as to enable the tube as a whole to effectivelyresist the action of the sand and water and render such openingsselfclearing or cleaning, thus insuring the continuous operation of thewell.

Vv'ith the above and other objects -in view, the invention consists inthe novel construction, combination and arrangement, herein.- af'i-crfully described, illustrated and claimed.

In the accompanying drawings, Figure 1 is a side elevation of ortions ofadjoining sections of well tubes efore they have had the slats or stripssecured thereto. Fig. 2 is a cross-sectional view on the line 2-2 ofFig. 1. Fig. 3 is an elevation similar to Fig. 1, showing the manner ofapplying the slats or strips to the tube sections, and Fig. 4 is acrosssection on the line 4--4 of Fig. 3.

in carrying out the present invention, I employ a pipe or tube 1 of anysuitablelength am provide the same with slots or kerfs 2,

extending lengthwise thereof, said kerfs terminating sufficiently remotefrom the extremities of the tube or pipe to retain the full strength ofthe tube or pipe and admit of the tube sections being connected securelyto gether by ascrew joint at the point 3. The slots or strainer openings2 are referably formed in a kerling machine whic o crates from theoutside of the pipe or tube, t e saws of such machine penetratin thepipe or tube from the outside. These slots .or erfs ma be formed of anydesired ,width, such widtii varying in accordance with the nature of thesoil where the well is to be drilled and lined.

To com lete the tube or lining I employ a series of sl zits or strips 4,of a width conforming substantially to the width of the metal betweentheslots 2, and of a length substantially equal to the length of the saidslots. These slats or strips are placed upon the tube 1 to cover themetal between the slots, and a wire binder 5 is then wrapped spirallyfrom end to end of the slats or strips, the distance between the layersor coils of wire being ractically uniform, as shown in Fig. 3, thusorming a series of uniform rectan ular interstices extending bothlongitudina ly of the tube and transversely around the same. The slatsor strips 4 add strength and stability to the tube, and since theexpensive portions of the well tube are the inner slotted sections,these sections are materially reinforced and enlarged by the slats orstrips and the wire bmding without much additional expense. A tube orlining thus armed with the spiral wire coils isniuch more easily turnedor ror The herein tated in place and removed when required, for thereason that there are no sharp edges to scrape the soil during rotationas would be the case where slotted tubes were employed without the slatsand wire armor. Furthermore greater strength and greater resistanceagainst corrosion are attained owing to the increased thickness and areapresented. 'Iclann,

described well tube lining and strainer consisting of an innertube'provi'ded with a series of longitudinal slots extending nearly tothe ends of saidtube, a series of strips applied to said tube to eoverthe metal between the slots and a spirally wound. wire binding wrappedaround the strips, the coils of said binding wire being of equaldistances apart to provide rectangular strainer mtersticesi 1 Intestimony whereof, I affix my signa ture 20

